*{
    /*初始化  取消页面的内外边距*/
    margin: 0;
    padding: 0;
}


body{
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

form{
    background: none;
}


span{
    display: inline-block;
    width: 100%;
    margin-left: 5px;
    color: red;
    margin-top: 0.5vw;
    visibility: hidden;
}


button{
    display: block;
    width: 13%;
    color: white;
    cursor: pointer;
    font-weight: bold;
    font-size: 10px;
    border-radius: 10px;
    background: black;
    border: none;
    outline: none;
    padding: 10px;
    transition: 0.3s;
}

button:hover{
    background: lightgreen;
}

#register_data label{
    background: none;
    color: black;
    font-weight: bold;
    font-size: 14px;
}


input{
    background: white;
    display: block;
    width: 70%;
    font-size: 18px;
    border: none;
    outline: none;
    border-bottom: 2px solid black;
    padding: 5px;
}

h1 {
    background: none;
    text-align: center;
    margin: 5px 0;
    color: darkblue;
}


.container{
    left: 10%;
    background:white;
    width: 30%;
    height: 80%;
    padding:30px;
    position: relative;
    border-radius: 15px;
    opacity:0.8;
    border: 4px wheat solid;
}

#btn{
    margin-left: 30%;
    background: #2c3e50;
}


.check_div{
    display: flex;
    width: 100%;
    height: 2vw;
    justify-content: center;
    align-items: center;
}

.check_div input{
    height: 1.5vw;
}

.check_div button{
    height: 2.5vw;
    flex: 1;
    margin-left: 1vw;
}

